as. 
76 GENUS BUCCINUM. 
almost uniform, and the spots are only formed upon the upper 
part of the whirls, instead of covering the whole surface of the 
shell. See our plate 20, fig. 75. 
Specimens are also met with which are nearly black. Blain- 
ville, in the Faune Francaise, pl. 6, B, fig. 4-4A, has figured 
this variety under the name. of Buccinum Ascanias; but the 
description which he has added, p. 178, No. 15, by no means 
belongs to the figure exhibited. We figure it, pl. 20, fig. 76. 
Risso, in his work upon the productions of Southern Europe, 
has formed from the varieties of this species, his PLanaxts Beu- 
dantiana, pl. 9, fig. 125; Puanaxis lineolata, page 173, pl. 9, 
fig. 136; PLanaxis raricostata, p. 174, pl. 8, fig. 106. Da 
Costa in his Catalogue des Coquilles de la Sicile, proposes to 
unite the two species of Payraudeau, and to give the type species 
the name of Buccinum elegans. As for us, we shall retain his 
first name of Buccrnum Cuvierii. 
77. BUCCINUM SCALARIFORME, Vat. The Stair-formed 
Buccinum. 
(Collect. Mass.) Cuemn., pl. 188, fig. 1808-1809 ? 
Pl. XXI, fig. 80. 
B. testa ovato-elongata, subturrita, apice acuta, albida; anfractibus valdé 
convexis, rotundatis, longitudinaliter plicatis, transversim tenuissimé stria- 
tis; apertura albd, subrotundatd; labro dextro tenui, intus striato; colu- 
mella arcuata. ‘ 
Shell ovate, elongated, slightly turreted, pomted at the 
summit ; spire composed of seven very convex rounded whirls, 
united by a shallow suture. Upon the whirls are regularly 
disposed longitudinal ribs or folds, crossed by numerous, fine, 
approximate strie, which, by their mutual intersection, cover 
the surface of the shell. Aperture white, and slightly rounded. 
Right lip thin, striated internally ; columella arcuated, covered 
by the left lip. The coloring is whitish, sometimes ornamented 
with transverse bands. 
Length 14 lines. Width 7 lines. 
